Coffee



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Patented Aug. 29, 1882.

& j 22 222? zE/ /W E25 QkJ w Qx I G. W. 8:. G. S. HUNGERFORD.

MACHINE FOR RENOVATING COFFEE, 8w.

(No Model.)

F N w re gae? 1 INVENTORS Mmjewlhmger o'rEL keorge-lhmgev ova. BY 4ATTORNEYS WITNESSES:

(No Model.) 2 2 .G. W. 8v. G. S. HUNGERPORD.

MACHINE FOR RENOVATING COFFEE, 6:0.

No. 263,523. Patented Aug. 29, 1882.

WITNESSES: a wQgVENTORSad l e 2 2T R MA lrrvgofia/ 7%: 266.2: -BYflflzlwfl ATIORNEYS Nv PETERS. Fholuhllmgmphar. Wnlhingou. D. C.

Sheets-Sheet 2.

UNITED STATES PATENT OFFICE.

GEORGE WV. HUNGERFORD AND GEORGE HUNGERFORD, OF NEW YORK, N. Y.

MACHINE FOR 'RENOVATING COFFEE, 84C.

SPECIFICATION forming part of Letters Patent No. 263,523, dated August29, 188.2. Application filed July 1, 1882." (No model.)

T 0 all whom itmcty concern Be it known that we, GEORGE W.HU1\'GER- FORDand GEORGE S. HUNGERFORD, both citizens of the United States, residingat New York, in the county and State of New York, have invented new anduseful Improvements in Machines for Renovating Coffee and otherMaterials, of which the following is a specification.

This invention relates to machines for cleaning or renovating coffee,rice, beans, or othermaterials of a similar nature, and especially thatclass ot' machines embodying two cylinders which are arranged one withinthe other to revolve in opposite directions, and are provided withdevices for acting on the material as it passes between them.

. This invention isillustrated in the accompanying drawings, in whichFigure lrepresents a vertical longitudinal section. Fig.2 is a sideelevation. Fig. 3 is a vertical cross-section 0n the line a; :r, Fig. 1.Fig. at is a similar section on the line 11 y, Fig. 1. Fig. 5 is asimilar section on the line 2 2, Fig. 1. t Fig. dis a detail view,showing a portion of one of the heads, staves, &c., of theinnereylinder.Fig. 7 shows one of the screw-sockets of the staves. Fig. 8 shows one ofthe brush-stocks.

The same letters indicate the same or corresponding parts.

The letter A designates the machine-frame, forming the'bearings for twoshafts, B U, which carry the cylinders D E, the inner cylindershaft, B,being continuous, while the outer cylinder-shaft, O, is made in twosections, embracing the inner shaft. Both shafts B O, moreover, carry apulley, B or O, forimparting thereto and thence to the cylinders arevolvin g motion.

The inner cylinder, D, is provided with external brushes,f, of wire orother suitable material, which extend in a spiral direction from one tothe other end thereof, and the body of the outer cylinder, E, iscomposed of sheet meta-l, which is corrugated at an oblique angle to theaxis of said cylinder and in an opposite direction to the spiral planeof the abovenamed brushes, so that if the material to be treated is fedto the outer cylinder in the proper manner, and the required motion isgiven to the cylinders, the material is propelled between and from oneto the other end of the cylinders by the brushes, due to their spiralarrangement, while the outer cylinder at the same time tends toretard-the material,

owing to its retreating corrugations, so that the material becomessubjected to the scouring action of the brushes.

The inner cylinder, D, is constructed of three (or more or fewer) heads,D, one at each end and one at about the mid-length,and of staves D thelatter carrying the brushes. Each of the cylinder-heads Dcomprises adouble rim, g g, (best seen in Fig. 4,) and radial equidistant webs 71.between the members of the rim forming an annular row or seriesof'frames, into which the staves D are inserted, the parts being sodisposed that the depth or height of these frames is greater than thethickness of the staves, which allows a radial movementof the stavcs.

Through the outer rim, 9, of each cylinderhead extend radially a seriesof set-screws, I, which engage the staves D respectively, so that byturning these screws in the proper direction the staves can be adjustedoutward to increase the diameter of the inner cylinder, and hence whenthe edges of the brushes become worn they can be set to compensate forsuch wear, and it is made practicable to preserve a fixed relation ofthebrushes to the outer cylinder.

Each of the staves D is provided with nuts,"

one of which is shown at j, Figs. 6 and 7, to receive the screwsconcomitant therewith, and t he brushesfare provided with threadedstocks f, Fig. 6, which are'screwed into the staves for attaching thebrushes.

The opposite ends of the inner cylinder, D, are closed by means of disksD of sheet metal or other suitable material, which are provided withradial slots a, (see Fig. 3,) and are fastened by means of screws 0,passing through the slots into the ends of a portion of the staves, sothat when the staves are adjusted, as before stated, the disk -fasteningscrews move in the slots, thus allowing such adjustment.

At its receiving end the outer cylinder, E, is provided withpropelling-blades or conveyers p, which are fixed to the inner surfaceof the cylinder, so as to share its motion, and are inclined in theproper direction to carry or throw the material between the cylinders,said ICC) blades extending inward beyond the leading end of the innercylinder.

Extending inward from the delivery end of the outer cylinder, E, is ascreen, Q, serving to allow the escape of dust, grit, and other likeimpurities separated from the material by the action of the brushes, andinclosing the delivery end of said cylinder, together with the screen,is a dustbox, R, in which the heavy particles of the impurities escapingthrough the screen accumulate, and whence they are removed by a door,It.

Through the dustbox R extends vertically a suction-flue, S, the upperend of which is in practice connected to an exhaust fan or the like, andwhich is provided with two months or openings, t t, in the side facingthe dusthox, one having connected thereto a spout, U, and the otherprovided with a gate, 1;, said spout being arranged to receive thematerial discharging from the outer cylinder, and serving to deposit thesame in the flue.

Between the two months t t in the suctiontlue S is arranged a gate, 1;,and when the latter, together with the gate 17. is opened, anyimpurities escaping with the material into the suction-flue are carriedoff, while any dust suspended in the boxR is carried off through themonth t. When, on the other hand, either gate v or v is closed, thedischarging material or the dust-box is out 01f from the blast in theflue.

The corrugated body and the screen of the outer cylinder are supportedby ribs E, combined with sectional hoops E and the sections of the outercylindershaft, 0, are provided with radial arms 10, forming spiders,whereby they are connected to the cylinder-ribs.

It should be remarked that the sheet-metal body of the outer cylindercan be indented or roughened in any suitable manner, instead of beingcorrugated, without departure from our invention.

What we claim as new, and desire to secure by Letters Patent, is-- 1.The combination, substantially as'hereinbefore set forth, of the innercylinder having external brushes which extend spirally around it, andthe outer cylinder having its body composed of sheet metal, which iscorrugated at an oblique angle to the axis of said cylinder and in anopposite direction to the spiral plane of said brushes of the innercylinder.

2. The combination, substantially as hereinbefore set forth, of theouter cylinder, the longitudinal inner cylinder, staves carrying brushesarranged in a spiral direction, the inner cylinderheads provided withinner and outer connected rims, between which the ends of the staves arearranged and guided, and devices for radially adjusting the stavesbetween the rims.

3. The combination, with the outer cylinder, of the inner cylinderconsisting of longitudinal staves carrying brushes, the innercylinderheads having inner and outer connected rims, between which theends of the staves are arranged and guided, and adj listing-screwspassing through one of the rims of each head for radially adjusting thestaves, substantially as described.

4. The combination, substantially as hereinbefore set forth, with theradially-adjustable staves of the inner cylinder carrying brushes, ofthe closing-disks at the opposite ends of said cylinder, having radialslots, and the fastening-screws passing through said slots into the endsof the staves.

5. The combination, substantially as herein set forth, of the innercylinder, the outer cylinder, and the propelling-blades at the receivingend of the outer cylinder, adapted to throw the material between thecylinders.

6. The combination, substantially as hereinbefore set forth, of theouter cylinder having the screen at its delivery end, and the dust boxinclosing such end of the cylinder, together with the screen, with thesuction-flue extending through the dust-box and having the two months,the delivery-spout connected to the lower of such months, the gate tothe upper month, and the gateintermcdiate otthe months.

In testimony whereof we have hereunto set our hands and seals in thepresence of two subscribing witnesses.

GEORGE W. HUNGERFORI). GEORGE S. IIUNGERFORD. \Vitnesses:

CHAS. WAnLERs, VVILLIAM MILLER.

[r.. s. [In s.

